Surface scraper



March 25, 1941. "R. N. FRIEND 2,236,093

SURFACE SGRAPER Fil d April 27, 1939 2 Sheets-Sheet 1 1a a a K 3 IgEIFVTQR. W4 44%;,

ATTORNEY.

March 25 1941. R. N. FRIEND I 2,235,093

SURFACE SGRAPER Filed April 27, 1939 2 Sheets-Sheet 2 INVEN TOR.

ATTORN Patented Mar. 25, 1941 i 2,236,093

UNITED STATES PATENT OFFICE SURFACE SCRAPER I1 1 Richard N. Friend, Sioux City, Iowa Application April 27, 1939, Serial No. 270,387

4 Claims. (Cl. 30-172) My invention relates to a device for scraping with the exception of the arcuate portions 26.

surfaces. These arcuate portions, however, are important An object of my invention is to provide a desince they assist in the sharpening action to be vice which is adaptable for use on certain types described.

of surfaces, and especially roofing. In use, the handle I0 is grasped and the unit A further object of my invention is to provide is thrust in the direction of the arrow 2! with a scraper which will scrape gravel from roofing the lower edges 22 of the scraping members therein an efficient manner. by being applied transversely against the gravel A further and important object of my invention or other surface. By virtue of the edges thus f is to provide a scraper which during the scraping formed, the gravel or such surface is efiiciently id operation of certain of the blades, will automa-tremoved. Since the thrust is imparted again-st ically resharpen the other blades. the forward edges or those edges in the direction A further object of my invention is to proof motion, the reverse edges such as 23 which are vide a scraper which is easily manipulated and curved away from the direction of motion will ,4 can be operated either by hand, or power operbe automatically sharpened.

ated. The handle can then be swung to the dotted A further object of my invention is to pro ide position as shown in Figure 1 and the device is an ar a ement wherein new blades can be inforced in the direction of the arrow 24 with the serted as desired. sharpened edges thereby being in position for O A er Object of y invention is to prov e operation, and in this instance, the edges 22 will a device of simplicity which can be manufactured resharpened, The operation can b performed ataea$0nab1e C0513- with several successive movements of the unit i 351195? andother Objects 1n V1eW, my before reversing but by virtue of the aforesaid vention consists in the construct on, arrangearrangement, the edges are thereby automatically 5 mam and combmartlon of varwus parts of resharpened. If desired, any power arrangement my device, whereby the objects contemplated are can be .attached to the handle m for driving attained, as hereinafter more fully set forth, the same. pointed in my claims and illustrated in the Amodified form of the device is shown in Figure accompanying drawings, in which: 30 Figure 1 is a side elevation of the scraper,

Figure 2 is a plan view of the same, Figure 3 is a detail of a slight modification, Figure 4 is a further detailed modification, Figure 5 is a further modification,

H, angle members can be used which are attached Within suitable keepers 26 which are attached to a similar arrangement :as shown in Figures 1 and 2 by means of bolts and nuts 2'! and 28.

. Figure 4 shows a. further modification where- M g gff igi g of Figure 5 taken along in a straight channel can be employed without Figure modified form of a holding plate, the curved edges. Figure 5 illustrates a modi- Figure 815 afurther modification, fication wherein the same principles are em- Figure 9 is a plan View Of Figure 3, and ployed with the exception that the channel memo Figure 10 is a funther modification hers I! include extending pins 29 Wl'llCh are re- W I have used the character H] to designate th ceived within suitable openings 30 in downwardhandle of my craper which i pivoted means projecting ears are attached to Suitof a bolt ll, which bolt is received substantially able UaIISVBISB p s In "this for of dem, mid-point, between m ,t flange |2 vice, the members l'l will rock or pivot on the which are integral portions of the angle mem- P 29 wh ch W ll thereby provide a pivoting aci5 bers l3. Attached transversely across the memtion to the cutting edges thereby providing a hers is ar th receiving ha l M hi are positive action in the direction of thrust and in suit-ably Welded thereto or attached in any suitmany cases a more efficient a t able manner. Attached within the chanel memre 7 S ows a further odification wherein 5U bers I4 by means of th bolts and nut 15 and the same construction is employed as in Figures [6 are the scraping members I1. The scraping 1 and 2 with the exception, however, that a plate members l'l include the base portions 18, the member 33 which is attached to the an e mdownwardly extending vertical portions l9 and hers I3 isemployed. This plate member extends the arcuate portions 20. The scraping members laterally the entire length of the member I! and are thus formed in a substantial channel shape includes the downwardly extending portions 34 55 3 wherein instead of transverse channel members and 35 leaving openings at 36 and 31 for the reception of similar members I 1.

In referring back to Figure 1 it will be noted that there are two pairs of spaced openings 38 which are located in the side members l2. The reason for these openings is to provide means for attaching the bolt II in either of the openings 38 so that pressure can be applied more directly in the direction of movement. For instance, as shown in Figure 1, the handle It! can be pivoted p the bolt l I in the left hand pair of openings 38 which after several scraping motions of the device the pivoting point can be changed to the right hand openings although this is not always essential and the arrangement can be pivoted centrally as shown.

In referring to Figure 7, it is not always essential to use the spacers 34 and 35 and if desired, fiat plates can be employed. Figure 8 shows a modification wherein the same principle is employed with the exception, however, that a single unit wherein a single scraping channel 39 which can be wider than those heretofore described is used. The same attached arrangements, however, such as the handle can be employed and the handle can be pivoted suitably within a forwardly extending channel member 40 and the scraping members 39 are welded thereto (see Figure 9).

Figure 10 shows a modification wherein instead of rearwardly located members only single members are employed such as 4! having forward cutting edges 42. The members 4| are attached at 43 by welding or in any other suitable means to a plate member 44 which is attached to a suitable channel such as 45 which incldes an opening 46 which can serve the same purpose as the openings 38 heretofore described.

The handle I0 in this form of structure can abut at 41 against the plate 44 to limit upward movement. In this form of device the scraping action will be applied forwardly only, without reversal. If desired, the members 4| can be attached by means of suitable bolts if it is desired to form a unit with replaceable cutting blades.

It will now be seen that I have provided a surface scraper, especially adaptable for use as a roofing scraper, which will efficiently scrape gravel and similar substances, which includes means for automatically resharpening blades of the device, which is efl'icient in operation and which can be manufactured at a reasonable cost.

Some changes may be made in the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. A surface scraper comprising a plurality of spaced transverse channels, means for forcing the lower edges of said channels against surfaces to be scraped, said channels including substantially arcuate and outwardly bent lower side edges to provide sharpening action against rear edges when forward edges are applied against scraped surfaces.

2. A surface scraper comprising a plurality of spaced transverse channels, means for forcing the lower edges of said channels against surfaces to be scraped, said channels including substantially arcuate and outwardly bent lower side edges to provide sharpening action against rear edges when forward edges are applied against scraped surfaces, a plurality of retaining channels receiving and attached to said scraping channels.

3. A surface scraper comprising a plurality of spaced transverse channels, means for forcing the lower edges of said channels against surfaces to be scraped, said channels including substantially arcuate and outwardly bent lower side edges to provide sharpening action against rear edges when forward edges are applied against scraped surfaces, a plurality of retaining channels receiving and attached to said scraping channels, a pair of forwardly extending flanges attached to said receiving channels, a handle pivoted between said flanges.

4. A surface scraper comprising a plurality of u spaced transverse channels, means for forcing the lower edges of said channels against surfaces to be scraped, said channels including substantially arcuate and outwardly bent lower side edges to provide sharpening action against rear edges when 

